CVE-2021-46828
Published: 20 July 2022
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
Notes
| Author | Note |
|---|---|
| alexmurray | ntirpc is forked from libtirpc so shares a lot of code |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libtirpc Launchpad, Ubuntu, Debian |
jammy |
Released
(1.3.2-2ubuntu0.1)
|
| upstream |
Released
(1.3.3rc1)
|
|
| impish |
Ignored
(end of life)
|
|
| bionic |
Not vulnerable
(code not present)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
| focal |
Released
(1.2.5-1ubuntu0.1)
|
|
| kinetic |
Released
(1.3.2-2.1)
|
|
| lunar |
Not vulnerable
(1.3.2-2.1)
|
|
|
Patches: upstream: http://git.linux-nfs.org/?p=steved/libtirpc.git;a=commit;h=86529758570cef4c73fb9b9c4104fdc510f701ed |
||
|
ntirpc Launchpad, Ubuntu, Debian |
focal |
Not vulnerable
(code not present)
|
| jammy |
Not vulnerable
(code not present)
|
|
| kinetic |
Not vulnerable
(code not present)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Needed
|
|
| bionic |
Not vulnerable
(code not present)
|
|
| impish |
Ignored
(end of life)
|
|
| lunar |
Not vulnerable
(code not present)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |